Dame Sarah Storey has become Great Britain's most successful Paralympian of all time after winning her 17th gold medal.The 43 year old won the women's C4-5 road race overnight in Tokyo – a title she has held since London 2012 – making her the first British Paralympian to pick up a 17th gold medal.Team GB also won silver in the race, with Crystal Lan-Wright finishing just seven seconds behind Sarah.